Excavating-machine



(No Model.) 2 SheetsSheet 1.

J. T. DOUGINE.

EXGAVATING MAGHINB.

No 307.751. Patented NOV. 11, 1884.

jZZY/K/ 0/ 2 sheets sheet 2.

J. T. DOUGINE.

EXGAVATING MACHINE.

(No Model.)

No. 307,751. Patented NOV. 11, 1884.

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JAMES T. DOUGINE, OF CHICAGO, ILLINOIS.

EXCAVATlNG=MACHINE SPECIFICATION forming part of Letters Patent No. 307,751, dated November 11, 1884:. Application filed April 16, 1884. (No model.)

To all whom it may concern Be it known that I, AMES T. DOUGINE, a citizen of the United States, residing in Ohicago, in the county of Cook and State of Illinois, haveinvented a new and useful Improvement in EXcavatingMachines, of which the following is a specification.

This invention relates to digging or excavating machines wherein an endless belt or chain of buckets is employed to elevate the dirt, and more particularly to improvements upon the machine heretofore patented to me in Letters Patent of the United States No. 225,001, under date of March 2, 1880.

My present invention consists,in connection with the elevator, which is provided with an advance rotary cutter driven from the lower pulley-shaft of the elevator-chain, either by sprocket-wheels and chains, gears, or other suitable mechanism, of a casing or covering, preferably made of sheet metal, inclosing said driving mechanism, for the purpose of protecting it from the dirt.

The invention also consists in providing the shaft of this rotary cutter with revolving knives or clearers on each end of the shaft outside of this casing which incloses the driving gear or mechanism, so as to clear a way for the casing and prevent the same offering obstruetions to the advance of the machine or to its lateral motion when the elevator is swung from side to side.

The invention also consists in providing this advance cutter and the lower end of the elevator with a sliding hood or shield, which may be shot forward into the embankment, for the purpose of shielding or protecting the advance cutter and elevator-chain from a caving embankment, which contingency frequently occurs.

I11 my former patent, referred to above, I mounted the engine or means for driving the elevator-chain in or upon the swiveling frame which carries the upper end of the elevator and its drivingpulley, so that the engine and its connecting mechanism will always bear the same relation to the driving-shaft of the elevator-chain as the elevator swings from side to side; but in the present improvement I effect this result in a different way; and herein also my invention consists that is to say, in

making the lower pivot of the swiveling frame in the'form of a hollow sleeve, which fits in a suitable sleeve or journal in the cross-beam of the frame, and then communicating power to the driving-shaft of the elevator-chain by means of a shaft extending up through this hollow pivot orjournal of the swiveling frame, so that the engine or source of power may be located or mounted upon the stationary platform of the carriage, boat, or other vehicle upon which the machine is mounted.

The invention also consists in mounting the inner end of the delivery or discharge elevator in asimilar swiveling frame and communicating power to the driving shaft or pulleys of this discharge-elevator by gearing, or connecting the central vertical shaft, which extends up through the sleeve or hollow pivot of the swiveling frame of the discharge-elevator, with thesimilar vertical shaft which extends up through the sleeve or hollow pivot of the other swiveling frame.

The invention also consists in the novel de vices and novel combinations of devices herein shown and described.

In the accompanying drawings, which form a part of this specification, and in which simi lar letters of reference indicate like parts, Figure 1 is a side elevation of an excavatingmachine embodying my invention. Fig. 2 is an enlarged cross-section showing the swiveling frame in elevation. Fig. 3 is a detail plan view of the advance rotary cutter, the casing being sectioned on one side to show the driving mechanism; and Fig. i is an enlarged ele-.

vation of section of the chain and buckets.

In said drawings, A represents the platform of the vehicle A, upon which the apparatus is mounted. A are the vertical standards or frame-pieces upon which the swiveling frame 13 is mounted, and D is the frame of the elevator, upon which are journaled the shafts d (7/ of the sprocket-wheels cl cl, which carry the elevator-chain and buckets D. This frame D is supported at its upper end in the swiveling frame B, the shaft (1 being also journaled in the swiveling frame 13. The lower end of the elevator-frame D is provided with acrossframe or legs, D having wheels (1, which rest and run upon a curved track, E, on the front end of the platform A. The lower end of the elevator-frame is swung around 011 this track E by means of the windlass E and rope E connected to the cross-frame D I For a fuller description of this track and Windlass, as well as the guiding or steering mechanism F F, and the mechanism G G, for propelling the vehicle forward, I would refer to my previous patent, above mentioned, as these devices constitute no part of the present invention.

The swiveling frame B, which supports the upper end of the elevator, is provided at its lower end with a hollow pivot or sleeve, 1), which rests and is supported in a suitable j ournal or sleeve, Z), on the bridge-piece B,which extends across between the vertical standards or frame-pieces A and the upper end of this swiveling frameB is provided with a pivot or short shaft, b which is journaled in the bridge-piece 13 which extends betweenthe vertical frame-pieces A at the top thereof. The shaft d carries the upper sprocket-wheels, did, and is provided with a bevel-gear, D which meshes with the bevel-gearb on a shaft, b which is journalcd in suitable bearings,b, secured to the swiveling frame B; and this shaft 1) is provided near its lower extremity with a spur-gear, b, which meshes with a spur-gear, Z), on the shaft 1), that extends up through the bridge-piece B, and through the hollow sleeve 1) on the end of the swiveling frame 13. Power is communicated to this shaft I) from an engine or other suitable power located on the platform of the machine by means of a bevel-gear, b, on the countershaft b,which bevel-gear meshes with abevelgear, b, on the vertical shaft b. The counter-shaft b is of course provided with a beltpulley or other means for connecting it with the source of power.

H is the discharge-elevator. Its outer end may preferably be supported on atrack similar to that which supports the front end of the elevator D, and its inner end is mounted in a swiveling frame in every way similar to the swiveling frame B of the elevator D, and its sprocket-wheel shaft h is driven by means of abevel-gear, h, on said shaft, meshing with the bevel-gear h on the vertical shaft h, which is provided at its lower end with a spur-gear, h", which meshes with a spur-gear, h on the shaft I), so that the elevator H, or its endless chain H, is driven in this way directly from the driving mechanisms of the elevator D. The upper or discharge end of the excavating-elevator Dis mounted in or about the axial or pivotal line of its swiveling frame 13, and the inner or receiving end of the discharge-elevator H is likewise mounted in or about the axial or pivotal line of its swiveling frame, so that the swinging of said elevators from side to side will not interfere with the proper registering of said elevators with each other or with the hopper interposed between them.

A represents a cross-brace extending becutter and digger.

tween the pairs of vertical frame-pieces A at the top, and a a represent brace-rods for said frame.

The elevator-frame piecesD are provided at their front ends with'horizont'al extensions I, on the ends of which the advance rotary cutter K is mounted. This rotary cutter K is provided with one or more rows of curved digging-teeth, k, and it is driven from the lower sprocketwheel shaft,d,by means of a sprocketwheel, 75,011 said shaft (1, and a chain, if, and

sprocket-wheel k on the shaft 7c of the rotary I These sprocketwheels k and k" and chain it are inelosed in a sheetmetal or other casing, L, which serves to protect them from dirt. Of course it will be understood that other means of communicating power from the shaft (1 to the rotary cutter may be employed. The shaft k" of the rotary cutter extends out on each side through these casings L, andbears on each end one or more revolving knives or c'learers, K, which serve to cut away the embankment as the elevator is swung laterally from side to side, and which also serve to clear the way for the casing and frame-pieces at each end of the rotary cutter.

M represents a sliding shield, consisting, preferably, of a flat sheet or plate of metal, and mounted in suitable guides or ways on the frame-pieces M, so that it can be slid forward so as to project over the rotary cutter and the end of the elevator-chain for the purpose-of protecting the same from atumbling embankment, as occasion may require. To project this shield forward I connect it by a rod, m, with a lever, m, pivoted to the elevator-frame, the handle of which projects down near the Windlass E, in convenient reach of the operator.

The elevator-chain and its buckets may preferably consist of a number of overlapping plates, 0, on the links of the chain, every third or fourth one of said plates having aback curved up, as shown at c, and one or two Vacant links being left between each series of plates, as shown at 0.

O is a jack-screw, one of which is provided at each corner of the platform.

I is a brace-rod for the elevator H, connected at its upper end to a cross-arm secured to an extension of the upper pivot of the swiveling frame 13 of said elevator, so as to permit the elevator to turn with the swiveling frame. One of these brace-rods is attached to each side of the elevator-frame H. c

I claim- 1. In an excavating-machine, the combina tion of the elevator having its frame D provided with horizontal extensions I I, with an advance rotary cutter or disintegrator, and casings L, inclosing the driving mechanism of said rotary cutter, substantially as specified.

2. The combination, with the elevator of an excavating-machine, of an advance rotary cutter driven from the lower pulley-shaft .of the elevator by sprocket-wheels and chains or equivalent mechanism, and the casing inclosing said sprocket-wheels and chains, substantially as specified.

8. The combination, in an excavating-machine, of an elevator, an advance rotary cutter, and a sliding shield to protect the same against falling embankments, substantially as specified.

4:. I11 an excavating-machine, the combination, with the elevator, of a sliding shield, M, mounted on the digging end of said elevator, substantially as specified.

5. The combination, in an excavating-1nachine, of the elevator with a swiveling frame, B, in which the upper end of said elevator is mounted, said swiveling frame being provided with a hollow sleeve journaled in the bridge or cross-frame piece, and a driving-shaft extending up through said hollow sleeve, con nected with the driving-shaft of the elevator in said swiveling frame, and communicating with the source of power, substantially as specified.

6. The combination, with the swinging 0X- cavating-elevator D, having its upper end mounted in a swiveling frame, B, and in the axial line of said frame, of a swinging dis charge elevator, H, having its inner end mounted in a similar swiveling frame and in the axial line thereof, substantially as specified.

7. In an excavating-machine, the combination of the elevator, the swiveling frame B, the driving-shaft d, journaledin said swiveling frame, bevel-gear b thereon, shaft b ,p1'ovided with bevel-gear b and spurgear b and shaft I)", provided with spur-gear I), extending through the hollow sleeve 1) of said swiveling frame, and bevel-gear b, meshing with bevel-gear b on the counter-shaft b, substantially as specified.

8. The combination, with the elevator D, of swiveling frame B, provided with hollow sleeve 1), journaled in the bridge-piece, the shaft 1), extending up through said hollow sleeve to communicate power to said elevator D, and provided with a spurgear, 7L5, meshing with a spur-gear, h; on the shaft If, and the dischargeelevator H, mounted in a similar swiveling frame at its upper end, and driven by the shaft h substantially as specified.

9. The combination, with the elevator of an excavating-machine, of an advance rotary cutter, driving mechanism for operating said rotary cutter from the lower pulley-shaft of said elevators, a casing inclosing said driving mechanism, and revolving clearers or knives at each extremity of said rotary cutter outside of said casing, substantially as specified.

JAMES '1. DOUGINE. Vitnesses:

H. M. MUNDAY, TAYLOR E. BROWN. 

